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Rough Idle R33

mr_crust

By mr_crust,
in General Maintenance

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mr_crust Experienced

mr_crust

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Saturday night i lined up a wrx and had a quick run, after hittin 80ks my exhaust starting popping real bad, now i backed of straight away and didnt think much of it. Monday morning on the way to work gave it a squirt and it happend again. So i knew it was misfiring after 4500Rpm , but anything under that was fine.

I checked all the coil packs and they wer fine, the spark plugs were finished, so i changed them tonight and now the car can r33 redlines without the popping noise but the idle is real lumpy (normally 650rpm now its 800rpm and when u drive the car feels like its hopping

what can cause this apart from the spark plugs and coil packs? this is doing my head in ?

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mr_crust Experienced

mr_crust

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well problem sorted out this morning, for future reference to anyone with a similiar issue , all i did was unlplug one coil pack connector at a time and start the car , if the car felt really lumpy i knew the coil was fine, but when i got to the 4th coil pack and undone the plug and started the car it had no effect , so i knew it was damaege, so i found a place with a single spare coil pack and am getting it changed today :0

Edited by mr_crust
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mr_crust Experienced

mr_crust

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hahah, not selling the cooler ever :D

ok, job done and the cars running fine again. To check the resistance get a multimetre and put it on the pin to the left and the middle pin , it should read 0.7ohms anything different means it damaged

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